condition	mean	min	max
4 h after light	21.19055	20.2079	22.1732
8 h after light	20.351599999999998	19.6142	21.089
12 h after light	19.4713	17.2405	21.7021
4 h after dark	20.852	15.6481	26.0559
8 h after dark	18.72255	18.0158	19.4293
12 h after dark	24.0541	23.1182	24.99